Recent Publications

08.04.2019 – Joint publication by Organic Spintronics Team accepted by Nature Physics

A joint publication by the Organic Spintronics Team (OST) and collaborators from the ERC Synergy Project, the Max-Planck Institute for Polymer Research in Mainz and the University in Mons (Belgium) has been accepted for publication in Nature Physics.
This paper presents a novel experimental perspective on spin and charge dynamics in high-mobility polymers, supported by calculations of the spin admixture distribution in realistic, large-scale polymer morphology models performed by the OST.

19.02.2019 – Joint publication by Organic Spintronics Team published in Nature Electronics

A joint publication by the Organic Spintronics Team and other ERC Synergy Project collaborators has been published in Nature Electronics. This paper presents experimental measurements of extremely long spin diffusion lengths in high-mobility organic polymer materials.
Modeling by the Organic Spintronics Team explains this finding in terms of the weak up-down spin mixing found in planar conjugated polymers with weak spin-orbit coupling.

09.03.2018 – Combined SPEX and DFT study on the surface reconstruction of 2Fe/Ir(111)

The study of Melanie and Bertrand Dupé on "Revealing the correlation between real-space structure and chiral magnetic order at the atomic scale" has just been published in Physical Review B as Rapid Communication. This work is a collaboration with the the Scanning Probe Microscopy Group of Alexander A. Khajetoorians at the Radboud University in Nijmegen, The Netherlands.

09.02.2018 – Antiferromagnetic resonance in Mn2Au with Neel Spin-Orbit Torques

The team of Jure Demnsar, in collaboration with Gomonay and Sinova,  have been able to excite antiferromagnetic resonance in Mn2Au by exploiting the Neel spin-orbit Torque.

N. Bhattacharjee, A.A. Sapozhnik, S.Yu. Bodnar, V.Yu. Grigorev, S.Y. Agustsson, J. Cao, D. Dominko, M. Obergfell, O. Gomonay, J. Sinova, M. Kläui, H.-J. Elmers, M. Jourdan, J. Demsar
Néel Spin Orbit Torque driven antiferromagnetic resonance in Mn$_{2}$Au probed by time-domain THz spectroscopy
arXiv:1802.03199

26.01.2018 – Our prediction of Neel Spin-Orbit torques in Mn2Au realized experimentally

The Kläui group in collaboration with the Sinova group demonstrate technologically feasible read-out and writing of digital information in antiferromagnets / Basic principle for ultrafast and stable magnetic memory. This was achieved by our prediction of Neel Spin-Orbit Torques three years ago. You can see the press release here.

S. Y. Bodnar et al., Writing and reading antiferromagnetic Mn2Au by Néel spin-orbit torques and large anisotropic magnetoresistance, Nature Communications 9, 24 (2018), DOI:10.1038/s41467-017-02780-x

09.06.2016 – High-profile Spin+X publication: Room-temperature spin-orbit torque in NiMnSb

Making magnets flip like cats at room temperature

In today’s world of ever-increasing digital information storage anpost picd computation, the next information storage revolution seeks to exploit a novel effect arising from the relativistic physics of Einstein, which allows to effectively convert a new type of magnet into cats. Through this effect, these magnets can flip themselves through the internal motion of their own electrons. One can almost describe these new types of magnets as relativistic magnetic cats.

In these new magnetic materials, a current running through the magnet can flip the direction of the magnetization depending on the direction of the current. This novel phenomenon in physics, dubbed spin-orbit torques, links the spin-degree of freedom of magnets that gives rise to the magnetization, to the charge degree of freedom that allows for current-charge motion inside the material. Continue reading "09.06.2016 – High-profile Spin+X publication: Room-temperature spin-orbit torque in NiMnSb"

28.08.2014 Tunable spin-charge converter made of gallium-arsenide realized

International group of scientists led by Prof. Dr. Jairo Sinova from Mainz University open up new approach in searching and engineering spintronic materials

Publication in Nature Materials

spin-charge-converter
Tunable spin Hall angle device based on GaAs through field induced intervalley repopulation. Ill./©: Jairo Sinova 

Spin-charge converters are important devices in spintronics, an electronic which is not only based on the charge of electrons but also on their spin and the spin-related magnetism. Spin-charge converters enable the transformation of electric into magnetic signals and vice versa. Recently, the research group of Professor Jairo Sinova from the Institute of Physics at Johannes Gutenberg University Mainz (JGU) in collaboration with researchers from the UK, the Czech Republic, and Japan has for the first time realized a new efficient spin-charge converter based on the common semiconductor material gallium-arsenide (GaAs).

Continue reading "28.08.2014 Tunable spin-charge converter made of gallium-arsenide realized"